You are right promoters lent money to the company which was interest free. Pls check Q1 FY16 ppt they have mentioned that interest is payable @14% from Q1 as things have improved. This fact alone is a major comfort factor regarding promoters.
@varun_kejriwal I think what they mean is that Bretton can supply other equipments like granite cutting and polishing machines to other players in India. Quartz remains exclusive though.